三维网状锂镍硼磷酸盐的水热合成及结构

Hydrothermal synthesis and structure of a borophosphate compound with Li and Ni

利用水热方法合成新型硼磷酸盐化合物Li[NiBP2O8(H2O)2].(H2O),单晶X射线衍射分析证明该化合物属六方晶系,空间群为P6522,a=0.93 359(3)nm,c=1.574 97(11)nm,γ=120.00°,V=1 1.888 2(10)nm3,Mr=320.44,Z=12,F(000)=960,μ=2.91 mm-1.结构中BO4,PO4基团形成∞1[BP2O8]3-的螺旋带与NiO6相连构成八面体-四面体空间骨架,水分子靠近螺旋带通道的内侧,起到稳定骨架的作用.同时通过X射线粉晶衍射、红外光谱等对化合物进行了表征.

A borophosphate compound Li[NiBP2O8（H2O）2]·（H2O） was prepared by hydrothermal synthesis and characterized by X-ray single crystal diffraction.The title compound to hexagonal system,space group P6522,a=0.933 59（3）nm,c=1.574 97（11）,γ=120.00°,V= 1.188 82（10）,Mr=320.44,Z=12,F（000）= 960,μ=2.91mm-1.The crystal structure of the compound contains infinite borophosphate ribbons1 ∞3-,built of comer sharing BO4 and PO4 tetrahedra.The ribbons are connected via NiO6 coordination octabedra,the central channel is filled by a helix made of water molecules.And the title compound is charactered by XRD,IR.